CLAS Physics Database

Measurement E151M113

Experiment: EG4
Year: 2016

Experiment comment:

Final asymmetry results for the ep-> e pi+ (n) channel extracted from CLAS/EG4 data obtained using a longitudinally polarized beam and a longitudinally polarized NH3 target (CAA HS07-02).
Spokesperson: Xiaochao Zheng
Reaction: ep → π+n
Polarization: beam (longitudinal), target (longitudinal)
Quantity: AUL
εL: 0.0829
Q2: 0.0291 GeV2
W: 1355.0 GeV
Ebeam: 1.0539 GeV
ε: 0.7833

Slice: cos(θπ+) =

Measurement data
cos(θπ+) φ(π+), [deg] AUL uncertainty
0.25 42.0 0.0597 0.6246
0.25 54.0 0.1832 0.7989
0.35 30.0 0.1639 0.6347
0.35 42.0 -0.1933 0.5628
0.35 54.0 0.0522 0.6699
0.45 30.0 0.6408 0.7281
0.45 42.0 0.3835 0.5224
0.45 54.0 -0.5006 0.5828
0.45 258.0 -1.3956 0.5862
0.55 30.0 1.2732 0.7315
0.55 42.0 0.7155 0.5429
0.55 54.0 0.9117 0.5573
0.55 222.0 -0.6475 0.7626
0.55 234.0 0.1249 0.5621
0.55 246.0 -0.3202 0.522
0.55 258.0 -0.0553 0.5727
0.55 270.0 0.2456 0.7345
0.65 138.0 0.4206 0.6893
0.65 150.0 0.2057 0.7288
0.65 162.0 0.8481 0.7152
0.65 174.0 -0.6345 0.7424
0.65 222.0 0.013 0.5754
0.65 234.0 0.6718 0.5367
0.65 246.0 -0.9733 0.4229
0.65 258.0 0.7679 0.4809
0.65 270.0 0.5069 0.572
0.75 126.0 -0.7384 0.7422
0.75 138.0 -0.4221 0.5834
0.75 150.0 -1.5001 0.5046
0.75 162.0 -1.3886 0.4406
0.75 174.0 0.0073 0.6783
0.75 222.0 1.1692 0.6119
0.75 234.0 0.4212 0.5322
0.75 246.0 -0.0136 0.4462
0.75 258.0 0.8422 0.4417
0.75 270.0 0.3699 0.6284
0.85 150.0 -0.5209 0.6784
0.85 222.0 0.6839 0.5607
0.85 234.0 0.2454 0.4432
0.85 246.0 0.6899 0.5064
0.85 258.0 0.46 0.4408
0.85 270.0 0.2624 0.45
0.95 246.0 0.5422 0.6157